Performance of a wideband, three-stage, mixed geometry gyrotwystron amplifier

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · IEEE Transactions on Electron Devices

DOI:https://doi.org/10.1109/16.405284· OSTI ID:178301

Malouf, P M; Granatstein, V L; Park, S Y; Park, G S ^[1]; Armstrong, C M ^[2]

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1. Omega-P, Inc., New Haven, CT (United States)
2. Naval Research Lab., Washington, DC (United States)

A three-stage, mixed geometry gyrotwystron amplifier has recently been operated and characterized at 4.5 GHz. Gyrotwystrons are hybrids of the gyroklystron and gyro-traveling-wave tube (gyro-TWT) amplifiers. In the device which was studied, the first two stages were tunable rectangular resonator cavities, and the third (output) stage was a circular cylindrical waveguide traveling wave section. All three stages operate in fundamental mode, and are separated by cut-off drift regions. This experiment was conceived as an extension of a previous three-cavity gyroklystron experiment, the motivation being to improve upon the gyroklystron instantaneous bandwidth of 0.4% while not sacrificing efficiency or gain. Measurements of gyrotwystron performance showed a 1.5% instantaneous bandwidth, a four-fold increase over that of the gyroklystron. The gain-bandwidth product of the gyrotwystron exceeded that of the gyroklystron by a factor of 6.

• OSTI ID: 178301
• Journal Information: IEEE Transactions on Electron Devices, Journal Name: IEEE Transactions on Electron Devices Journal Issue: 9 Vol. 42; ISSN 0018-9383; ISSN IETDAI
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CAVITY RESONATORS
EXPERIMENTAL DATA
KLYSTRONS
MICROWAVE AMPLIFIERS
OPERATION
PERFORMANCE
TRAVELLING WAVE TUBES